ios - 如何禁用单个 UI 元素的自动布局(UIlabel)
<p><p>我需要更改使用自动布局的 Viewcontroller 中标签的位置。在此之前，我使用了 </p>
<pre><code>;
;
</code></pre>
<p>但这会产生一些运行时警告</p>
<pre><code> Break on objc_exception_throw to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2013-08-15 23:25:58.791 Vicinitime Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints)
(
"<NSLayoutConstraint:0x9173a20 UIScrollView:0x9580190.bottom == UIView:0x9173890.bottom>",
"<NSLayoutConstraint:0x9171fe0 V:|-(138)- (Names: '|':UIScrollView:0x9580190 )>",
"<NSLayoutConstraint:0x91739a0 V:|-(0)- (Names: '|':UIView:0x9173890 )>",
"<NSAutoresizingMaskLayoutConstraint:0xab6ec90 h=--& v=&-& UILabel:0x958cf70.midY == -6.3989*UIScrollView:0x9580190.height>",
"<NSAutoresizingMaskLayoutConstraint:0xab6eef0 h=--& v=&-& V:>",
"<NSAutoresizingMaskLayoutConstraint:0xab6dbd0 h=--& v=--& V:>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x9171fe0 V:|-(138)- (Names: '|':UIScrollView:0x9580190 )>
</code></pre>
<p>所以我环顾四周，发现要解决我必须设置的问题
;
;</p>
<p>没有。问题是现在标签没有以编程方式改变位置。</p>
<p>如果您需要编写代码以编程方式设置标签:</p>
<pre><code> if(travelTimeInt <= activityTimeInt){
forState:UIControlStateNormal];
NSLog(@"got to setting label place");
;
;
}
if(travelTimeInt * 7 >= activityTimeInt){
forState:UIControlStateNormal];
NSLog(@"got to setting label place");
self.arriveTimeLabel.frame = CGRectMake(71, 170, 41, 25);
self.departTimeLabel.frame = CGRectMake(207, 170, 41, 25);
}
</code></pre>
<p>那么有没有办法在开启自动布局的情况下改变 uilabel 的位置？也许禁用自动布局？</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>如果您使用的是自动布局，那么您的 <code>UIViews</code> 将根据它们的 <code>NSLayoutConstraints</code> 进行定位。</p>
<p>要移动它们，而不是设置它们的 <code>frames</code>，您需要更改约束。</p></p>
<p style="font-size: 20px;">关于ios - 如何禁用单个 UI 元素的自动布局(UIlabel)，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/18267111/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/18267111/
</a>
</p>
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